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target/xtensa: extra debug info for "xtensa exe" failures

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- Read and display EXCCAUSE on exe error
- Clean up error messages
- Clarify "xtensa exe" documentation

Signed-off-by: ianst <ianst@cadence.com>
Change-Id: I90ed39f6afb6543c0c873301501435384b4dccbe
Reviewed-on: https://review.openocd.org/c/openocd/+/7982
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
ianst
2023-12-06 14:34:09 -08:00
committed by Antonio Borneo
parent 22ebb693b6
commit 04eda37263
2 changed files with 17 additions and 10 deletions
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9
doc/openocd.texi
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@@ -11600,13 +11600,14 @@ This feature is not well implemented and tested yet.
@end deffn
@deffn {Command} {xtensa exe} <ascii-encoded hexadecimal instruction bytes>
Execute arbitrary instruction(s) provided as an ascii string. The string represents an integer
number of instruction bytes, thus its length must be even.
Execute one arbitrary instruction provided as an ascii string. The string represents an integer
number of instruction bytes, thus its length must be even. The instruction can be of any width
that is valid for the Xtensa core configuration.
@end deffn
@deffn {Command} {xtensa dm} (address) [value]
Read or write Xtensa Debug Module (DM) registers. @var{address} is required for both reads
and writes and is a 4-byte-aligned value typically between 0 and 0x3ffc. @var{value} is specified
Read or write Xtensa Debug Module (DM) registers. @var{address} is required for both reads
and writes and is a 4-byte-aligned value typically between 0 and 0x3ffc. @var{value} is specified
only for write accesses.
@end deffn